Medical claims processors work for a health care office or insurance company. Their job is to check medical insurance claims for proper billing codes, update the doctor or insurer about changes to the claim, and clarify concerns about patient benefits. It is essential that the billing codes match the medical services provided. As a medical claims processor, you also follow up with the insurer to discuss discrepancies and find out the status of claims. Current procedural terminology (CPT) and data entry are central parts of a medical claims processor’s job, as they often use Microsoft Office applications or a secure database to enter billing codes for services rendered.